twitter/bootstrap — pull request #7090 by donaldpipowitch (2013-02-27 11:00:46+00:00)
Title: "Plasma TV first!"

Switched from non-proportional media queries to proportional media queries. If you sit far away from a large screen and zoom into the page you will get the "mobile" layout (e.g. responsive design not just far small screens, but for all screens). If you don't zoom the media queries behave normally.
(Caveat: Due to a [webkit bug](https://bugs.webkit.org/show_bug.cgi?id=41063) you see the changes only after refresh (Chrome, Safari). If you don't refresh the proportional media query behaves like a non-proportional media query, so this isn't a real problem. Nothing breaks - everything behaves like it behaves now. Within Firefox you see the changes immediately.)